| 土-结构相互作用问题中的放大效应研究 |
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| 引用本文： | 康帅,楼梦麟,孔庆梅.土-结构相互作用问题中的放大效应研究[J].世界地震工程,2018,34(1):009-16. |
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| 作者姓名： | 康帅 楼梦麟 孔庆梅 |
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| 作者单位： | 1. 河南大学 土木建筑学院, 河南 开封 475001;2. 同济大学 土木工程防灾国家重点实验室, 上海 200092 |
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| 摘 要： | 在土-结构动力相互作用问题的研究中，当土层与结构的自振频率相接近时，可能会出现类共振，对此进行了土-框架结构相互作用的振动台试验，将试验结果与刚性地基情况进行对比，选取的指标包括加速度、层间位移及应变峰值。结果表明:考虑土-结构相互作用的影响后，加速度、层间位移和框架应变均较刚性地基时有大幅的增加，应变峰值比最大可达到7倍，加速度峰值比最大可达5倍多，而位移峰值比最大约3倍左右。
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| 关 键 词： | 振动台试验 土-结构 相互作用 类共振 放大效应 |
Amplification effect of soil structure interaction problem |
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| KANG Shuai,' target="_blank" rel="external">,LOU Menglin,KONG Qingmei.Amplification effect of soil structure interaction problem[J].World Information On Earthquake Engineering,2018,34(1):009-16. |
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| Authors: | KANG Shuai " target="_blank">' target="_blank" rel="external"> LOU Menglin KONG Qingmei |
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| Affiliation: | 1. School of Civil Engineering and Architecture of Henan University, Kaifeng 475001, China;2. State Key Laboratory of Disaster Reduction in Civil Engineering of Tongji University, Shanghai 200092, China |
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| Abstract: | In the study of soil structure dynamic interaction,when vibration frequency of the soil layer is close to the structure, there may occur pseudo-resonance phenomenon.The shaking table test of soil structure interaction is carried out and discussed in this paper. And test results are compared with rigid foundation. The selected indicators include acceleration, inter layer displacement and strain peak value. Results show that when influence of soil structure interaction is considered, acceleration, storey displacement and frame strain are greatly increased when compared with rigid foundation. Strain peak ratio can up to 7 times, the acceleration peak ratio is more than 5 times, and the displacement peak ratio is about 3 times at the most. |
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| Keywords: | shaking table test soil-structure interaction pseudo-resonance amplification effect |
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